Not to shoot your dreams down or anything, a 500+whp motor is not a DD. If you still are going for that goal, its going to take more than just pistons rods and turbo. Enough fuel to do it is going to be one thing. What are you running for engine management? Get good at changing clutches, I go through about 3 a year. have a graveyard of transmissions, I went through 3 transmissions last year. Broke about 4~5 axles. Aside from that driving a 500whp car is tough, you'll have the power, but it will take the above mentioned broken parts to finally get that 1-2 shift right and the 2-3 shift right. 1st and 2nd gear become almost useless.
But if that hp goad were mine, then its would be a 2.0L Wiseco HD's probably 8.5:1 CR, TurboTuff I-beam Rods, ACL bearings, MitsuMLS with L19's. Head work will include valvetrain to allow for 10K+ RPM, 1mm OS vavles, and a a set of cams for that powerband. Expect a 4.5K to 8.5K style power band so a GT3076 will barely touch 500whp, and be streetable with spoolup around 4K. But the better option for 500+whp is a GT3582 or GT3586 or any FP variant of these turbos but at this point I'd rather go T3, and if you are ballin, go twin scroll T3 with a 3582 in a twin housing.
But here is my power graph vs wes's on the SAME EXACT TURBO, no two of the same ones, but he took it off his car and its on my car now. So you get an idea of what the difference is in a 2.3 and a 2.0L
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